I have a friend who is trying to sell a 1994 60" Exmark Turf Ranger. It has a 4 year old 22 hp kohler engine, 2004 total hours on the mower but it has not been turned on for 3 years (the Kohler engine has VERY few hours). We are trying to establish what value this mower is. Any suggestions? Also any comments on this age/style of Exmark?